SOLUTION: What is "restriction" in regards to an equation?

SOLUTION: What is "restriction" in regards to an equation?

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Question 152598: What is "restriction" in regards to an equation?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
An example of a "restriction" in an equation would be:
Here, the restriction is that x cannot take on a value of 3.
Why? Because, if x were equal to 3, then you would have:
or
...and as you know, division by zero is undefined and thus not permitted, so in this case, x = 3 is a restricted solution and .
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